Machine for corrugating tubular metal bodies



Sept. 10, 1929. c. J. RHODES 1,727,358

MACHINE FOR CORRUGATING TUBULAR METAL BODIES Filed April 22, 1927' 6 Sheets-Sheet 1 karle s Jose 0i lfkades MM SWM Sept. 10, 1929. Q RHODES 1,727,358

MACHINE FOR CORRUGATING TUBULAR METAL BODIES Filed April 22. 1927 e Sheets-Shet 2 Carles e705 e ylzfzkodcs Sept. 10, 1929. c. J. RHODES 1,7 7,3

MACHINE FOR CORRUGATING TUBULAR METAL BODIES Filed April 22. 1927 6 Sheets-Shet 5 Z/ /9- Z7 Z0 20 In 0612 Z 0 r 5 C'kar le s Jbsqvk]? 110165 Sept. 10, 1929. C RHODES 1,727,358

MACHINE FOR CORRUGATING TUBULAR METAL BODIES Filed April 22, 1927 6 Sheets-Sheet 4 [220612 for fi'karleg efase vfikodes Sept. 10, 1929. c, RHODES I 1,727,358

MACHINE FOR CORRUGATING TUBULAR METAL BODIES Filed April 22, 1927 6 Sheets-Sheet 5 I: W Zi 47 75 E l Z6 49 Z5 6 if? 6% I; E Q 59 a2 .5 Y 55 2; y a, 2%

/ 0 78 JJ a9 09 5 89 9/ 9? 4 b 3 f f 5/3 3 $5 /a 0 d\ PM #6 7 Jay's/1Z0); r Charla; 7a5e 4/2 iz/wfiz-g ,bya my}, M a W W Eatented Sept. 10, 1929.

CHARLES JOSEPH RHODES, 61" WAKEFIELD, ENGLAND.

MACHINE ESE CORRUGATIE'IG- TUBULAR METAL BODIES.

Application filed April the outside of the said drum.

l/Vith drum bodies such as those referred to it is sometnnes desired to produce a cireuniferential bead or bend having a radius larger tl an the radius of the corrugations,

such beads or bends'being disposed atsome distance from the endsof the drum body and having a plain cylindrical portion between them.

Hitherto, in order to produce the aforesaid corrugations with or without beadsor bends, the operation has been performed in two stages, that is to say, one half of the length of the body is first treated, the body withdrawn from the rollers turnedend for end and the completion of the operation. of-

fccted by subjecting the other end or part of the body to the action of the corrugating rollers.

The present invention has for its object to provide means whereby thecorrugating of the bodies with or without the beads or bends may be effected in one operation. 7

According to the present invention, instead of being: continuous from end to end, the rolls ers are formed in two parts mounted upon a spindle, provision being made whereby axial. lnotion one or both of the two parts towards and away from each other is permitted.

;Th is motion is essential to the proper effective operation of the rollers as during the rollins' of the body, its length is reduced, this be particularly the case where thebeads are provided.

It is also found that the corrngating oi i the body causes a reduction in the diameter thereof, so that the closures cannot be readily fitted.

The present invention has for its further object to overcome this objection.

1927, Serial in. 185859, and in area: Britain May 10, 19a

In order that the invention niay beithe better understood drawings are appendedin which zi i Fig. 1 is a side elevation of a machine according to this invention.

F 2 is an end elevation.

Fig. 3 is a plan. I

Fig. 4 is an end. elevation as seen from the opposite end to that shown in Fig. 2.

Fig. 5 is a sectional view on line 5-5 Fig. 2.

Fig. 6 is a transversesection on line 66 Fig.

Fig. 7 is an enlarged sectional view show ing' certain details of the main clutch.

Referring to the accompanying drawings 1 indicates a base plate, to one end off which ing 3 in which is supported one end. of a shaft 4 upon which shaft are mounted the two parts of the lower corrugating roller indicat-ed by '5 and 6. p y I Secured to the inner. face ofthe standard 2 is a horizontally disposed bracket 7 upon I the outer end of which is secured a bearing 8 which supports the other end of the shaft 4-, the centre of which shaft is sup cited by a bearing Si also mounted upon the bracket 7 and disposed between the parts 5 and 6 of the lower roller. v

Secured upon the end of the shaft which projects somewhat beyond the outer end of the bearing 3 is a pinion 9.

Secured to the upper portion ofthe standard 2 is a bracket 10 provided with bear. 11 and 12 in which is journalled the n tin drive shaft 13, which is driven by chain and sprocket gearing from a inotor 14c.

Freely mounted upon the shaft 13 apin ion 15 having its inncriace recessed, and in a by means of spindles having attheir ends screw threads of opposite hands which engage'similar threads formed in the sleeves 19, the spindles 20 being carried by bearings formed in lugs 20 projecting from a boss 21 keyed to the shaft 13.

The bolts 20 are provided at their centres with square shanks 23 upon which are mounted the outer ends of articulated links 24, the inner ends of which links are pivotally connected to a body 25 freely mounted upon the shaft 13.

The body 25 is provided around the periphery with an annular groove in which is freely mounted a body 26 provided upon either side with pins or projections 27 with which engage the ends of arms 28 formed inte 'ral with a bod- 29 secured u 3011 a s indie s J l P 30 carried in bearings formed. in the side walls of the bracket 10. Motion can be .im-

parted to the shaft 30 from a main clutch handle 31 by means of levers 32, 33, 34 and connecting rods 35, 36.

37 indicates a pinion mounted upon a steel 1 shaft 38 carried by the standard 2, the said pinion being disposed intermediate of the pinions 15 and 9 whereby when the pinion 15 is clutched to the shaft 13 motion is imparted to the shaft i to drive the rollers 5 and 6.

Secured t0 the base plate 1 at each side thereof are standards 39, which are also bolted to the standard 2.

Mounted upon theupper ends of the standards 39 and 40 is a bracket ll provided with bearings 42 which support a shaft 43 upon which is fulcrumed a lever 44 the inner end of which carries a shaft 45 to the ends of which shaft are pivotally connected the upper ends of links 46, 47, said links at their lo wer ends supporting the outer ends of a shaft 48 disposed transversely of the machine and passing through openings 39 lO formed I in the standards 39, 40.

The shaft 48 carries at its centre a body 7 49 disposed longitudinally of the rollers and provided at its ends with downwardly ex:-

tending projections 50, 51 in which are formed bearings 52, 53 carrying a shaft 5% upon which are mounted the two parts 55, 56 of the upper corrugating rollers which with the lower rollers 5 and 6 will be here inafter more fully described.

Secured to the outer end of the lever a4:

are rods 44? upon which is mounted a counw formed integral therewith, which together with plates y (Fig. 2) secured by means of screws to the said standards serve as guides tolprevent the body 59 from moving horizonta y.

Secured to the upper ends of the vertical limbs of the body 59 is a body 60 formed in the upper portion of which are bearings 61, 62 in which is carried a shaft 63 upon which is mounted a roller 64 with which cooperates a cam 65 carried upon a shaft 66 ournalled in bearings 67, 68' formed integral with the body 41.

The cam shaft 66 is driven from the main drive shaft 13 by means of the train of pinions 69, 70, 71 and 72, the pinions 70, 71 being secured upon a sleeve mounted upon a stub'shaft carried by arms 73, 73, formed respectively integral with the bracket 10 and bolted to the bracket ii.

If desired the pinion 72 may be normally freelymounted upon the shaft 66 but may be operably connected thereto when desired by means of any suitable clutch as indicated generally by 7%, which may be operated by means of" a hand lever 75 connected thereto by means of a bell crank lever 76 and connecting rods 77 and 78.

The cam 65, which as above stated cooperates with the roller 6%, is of such shape that it causes the body 59, which carries the body 49, to move downwards against the action of the counterweight 57 to allow the parts 55, 56 of the upper roller to move into a position wherein they can cooperate with the parts 5 and 6 of the lower rollers in order to effect the corrugating operation, after which, the said cam allows the parts 55, 56, to move upward to allow the corrugated body to be withdrawn from the machine. It will be noted that the parts of the upper roller are of considerably larger diameter than the parts of the lower roller thereby giving a much larger area of contact than would be the case if the parts of the upper roller were of the same diameter as those of the lower roller.

The lower portion of the body 60 is provided on its underside with a downwardly extending portion 60, which extends between the limbs of the body 59, andis provided at its under side with an inclined or cammed surface between which and the horizontal sur- From the foregoing it will be readily seen,

that if it is desired to effect the initial ad justment of the corrugating rollers, for X- ample to raise the parts 55, 56 of theupper roller this can beeffected by slacking the bolts which secure the body 60 to the body 59, also the lock nuts upon the guide bolts 82, and screwing in the set screws 83 when the inclined surface of the wedge block coacts with the inclined surface of the portion 60 of the body 60 to produce the desired result.

The parts 5 and 6 of the corrugating roller, which as previously stated are disposed one upon either side of the bearing 8, are splined to the shaft 1 and are provided at th eir'inner ends with a series of spring pressed plungers 8 1 disposed within holes bored therein.

The spring pressed plungers 841 (Fig. 5) are rounded at their outer ends and are so disposed that they bear upon the sides of the bearing 8, thus normally forcing the respective rollers 5 and 6 away from the said bearing and yieldably retaining them in this position.

The parts 55, 56 of the upper roller, which as previously stated are carried by the shaft 5%, are freely mounted thereon by means of roller bearings 86, and also freely mounted upon the said shaft is a circular body or distance piece 87 which is disposed between the parts 55 and 56. Bymounting the upper roller in the manner described it has a flywheel effect which acts to assist the operation of the machine.

Disposed at the inner ends of each of the parts 55, 56 are a series of spring pressed plungers 88, similar to those previously referred to, located in holes 89 drilled in the said rollers. These spring pressed plungers bear upon each side of the body. 87 and force the respective rollersaway from the middle portion of the shaft 54;. c

From the foregoing it will be apparent that when the corrugating operation is taking place and the length of the body being operated upon decreases as the corrugations become deeper the rollers Will be drawn towards each other against the action of the spring pressed plungers, and any damage to the body being treated is avoided.

Disposed adjacent the outer end of the roller 6 is a plate 90 of substantially inverted U shaped outline'which is provided at its upper edge with lugs 91 bored for the passage of a spindle 92 whereby the plate is pivotally mounted upon the said shaft which is in turn carried by means of brackets 93 secured upon projections 89 10, formed integral with the standards 39, 40 respectively.

94 indicates lugs disposed adjacent the lower edge of the plate 90 to which are pivotally connected the lower ends of links 95, the upper ends of which are piv'otally connected to the lower ends of arms 96 securedat their upper ends upon a shaft 97 journalled in, bearings 98, 99, formed in the lugs 39?, 40

Secured upon one end of the shaft 97 is a hand lever 100. The plate 90 is provided u on its inner face with a hardened steel p ate 90. When placing a body upon the roller, the hand lever 100 is raised by the operator to move the plate 90 clear of the roller 6, after which the body is placed upon the rollers and the hand lever lowered with the result that the body to be corrugated is pushed into the machine as the plate 90 contacts with the edge of the same. In order to allow the plate 90 to be maintained in a vertical position asuitable stop is provided which consists of lugs 102, 103 (Fig. 1) disposed upon the upper ends of the links 95 and the lower ends of the arms 96 respectively and so arranged that when the hand lever ispulled down and the links 95 and arms 96 are flexed beyond their com- 5 mon centre line the said lugs abut against each other.

10 1 indicates a plate secured upon the inner face of the standard 2 and which plate has secured thereto a steel plate 105 so disposed that it acts as a stop by contacting with the inner edge of the body being corrugated to thereby correctly position the same.

In order to facilitate the removal of corrugated bodies from the machine, thereis provided a frame comprised of strips 106 carried by members 107 secured to the inner ends of arms 108 mounted at their outer ends upon a shaft 109 journalled in bearings 110,

111 formed upon brackets 112 and 113 secured to the base plate 1.

Secured upon one end of the shaft 109 is the inner end of an arm lltwhich at its outer end is provided with a pedal 115. When the pedal 115 is depressed the body in the machine is lifted clear of the lower corrugatiug rollers, the removal of the said body from the machine being thereby facilitated. In order to ensure the correct positioning of the body to be corrugated the bearing 8 has formed integral therewith arcuate plates 8 which tend to maintain the centre of the body coincident with the vertical line cutting the axes of the rollers.

In order to prevent the cam 65 from racing,

bearings 118 mounted upon the bracket 41., Secured to one end of the shaft 118is one end of a horizontally disposed lever 119 which carries at its other end a weight 120, the action of which tends to rotate the shaft 118 to cause the brake shoe 116 to act upon the cam 65.

per rollers to secure the desiredparallelor In order to permit of adjustment of the up ers, the body 49 has its upper outer surface radiused as shown more clearly in Fig. 5. Said body as previously explained is secured by bolts 58 to the lower end of the body 59, the lower surface of which is curved to agree with the curved outer surface of the body A9. The bolts 58 pass through extensions formed upon the front and back of the body 59, which extensions are slotted for the passage of the said bolts. Projecting from the upper outer surface of the body 49 are radially disposed lugs 49 through which pass bolts 49', the inner ends of which engage the ends of the projections of body 59.

On slacking the bolts 58 and adjusting the bolts 49, the body 59 may be tilted in one or other direction so as to effect the desired axial alignment of the upper roller with respect to the lowerroller. Further, if so desired the alignment may be such as to put greater pressure on one end of the drum than on the other.

In order to prevent distortion or contraction of the mouth of the drum and to secure rapid output roller guides, which may be adjustable, are provided.

The operation of the machine is as fol lows The body to be corrugated is placed upon the lower roller after which the hand lever 31 is operated, with the result that the pinion 15 is clutched to the shaft 13 when the lower roller is rotated. Simultaneously with this operation the cam 65 is rotated with'the result that the body 49 together with the upper roller is periodically brought into a position whereby it cooperates with the lower roller to effeet the corrugating of the body.

The cam 65 is so shaped as to allow the upper roller to be maintained in its lowermost position for a sufficient period to cause the corrugations to be properly formed. 7

As hereinbefore stated the pinion 72 upon shaft 66 may be operably connected thereto by means of a clutch such as 7 4, in which case the motion of the said cam and consequently the reciprocal motion of the upper roller is controlled by the operation of the hand lever 75.

From the foregoing it derstood that the speed of the shaft 66and the shape of the cam 65 are'such that the said cam makes one revolution only causing the desired pressure to be exerted for a period equal to, or approximately equal to a complete rotation of the body to be corrugated, after which the top roller is raised and held in this position until the lever 7 5 is again" operated.

Claims.

1. A machine for corrugating tubular metal bodies comprising a roller formed in two parts mounted in axial alignment and capable of axial movement towards and away from each other and adapted to act from the outside of said body, a roller designed to supwill be readily un-' port and act upon the inside of said body, said second roller also being formed in two parts mounted in axial alignment and capable of axial movement towards and away from each other, means associated with said first roller t-oeifect angular axial alignment of said first port and act upon the inside of said body, said second roller also being formed in two parts mounted in axial alignment and capable of axial movement towards and away from each other, and resilient means opposing the axial movement of the parts of the said rollers and means associated with said first roller to automatically reciprocate it relative to said second roller after each revolution of both said rollers.

3. A machine for corrugating tubular metal bodies comprising a roller formed in two parts mounted in axial alignment and capable of axial movement towards and away from each other and adapted toact from the outside of said body, a roller designed to support and act upon the inside of said body, means associated with said roller to automatically reciprocate it once every revolution thereof, said second roller also being formed in two parts mounted in axial alignment and capable of axial movement towards and away from each other, a body interposed between the adjacent ends of the parts of each roller, spring plungers upon said parts engaging the outer faces of said body.

4. A machine for corrugating tubular metal bodies comprising a roller adapted to act upon the outside of said body, said roller being formed in twoparts capable of axial movement, a shaft supporting said parts, a' body disposed between the adjacent ends of the said parts, resilient means interposed between the sides of said body and the ends of u said parts,a body carrying the shaft, means for supporting said body in a manner such as to permit it to be reciprocated to bring the roller into and out of contact with the body 'being treated, a roller designed to support and act upon the inside of the body to be corrugated, said roller being formed in two parts disposed in axial alignment and capable of axial movement towards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaft carrying said roller, and means for driving said shaft.

5. A machine for corrugating tubular metal bodies comprising a roller adapted to act upon the outside of said body, said roller being formed in two parts capable of axial movement towards and away from each other,

a shaft freely supporting said parts, a body disposed between the adjacent ends of said parts, resilient means interposed between the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying said shaft, means for supporting said body, a second body carrying said sup iorting body means connecting the second ody to the first body in a manner such as to permit radial adjustment thereon, means for reciprocating the second body to bring the roller into and out of contact with the body to be corrugated, a roller designed to support and actupo'n the inside of the body to be corrugated, said roller bein formed in two parts disposed in axial alignment and capable of axial movement towards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaft carrying said roller, and means for driving said shaft.

6. A machine for corrugating tubular metal bodies comprising a roller adapted. to act upon the outside of said body, said roller being formed in two parts capable of axial movement towards and away from each other, a shaftfreely supporting said parts, a bodv disposed between the adjacent ends of said parts, resilient means interposed between the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying said shaft, means for supporting said body, a second body carrying said supporting body, means connecting the second body to the first body, means for reciprocating said body comprising a roller thereon, a shaft, a cam upon said shaft engaging said roller, means operating said shaft, a counterweight acting to hold the parts in a position to cause the roller to contact with said cam, aroller desigiied to support and act upon the inside of the body to be corrugated, said roller being formed in two parts disposed in axial alignmentand capable of axial movementtowards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaft carrying said roller, and means for driving said shaft.

7. A machine for corrugating tubular metal bodies comprising a roller adapted to act upon the outside of said body, said roller being formed in two parts capable of axial movement towards and away from each other, a shaft freely supporting said parts, a body disposed between the adjacent ends of said parts, resilient means interposed between. the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying said shaft, means for supporting said body, a second body carrying said supporting body, means connecting the second body to the first body, a third body, means connecting said third body to said second bot y, a Wedge element interposed between said second and third bodies adjustable to vary the degree of separation between said second and third bodies, a roller carried by said third body, a shaft, means driving said shaft, a cam upon saidshaft engaging said roller, means operating said shaft, a counterweight acting to hold the parts ina position to cause the roller to contact with said cam, a roller designed to support and act upon the inside of the body to be corrugated, said roller being formed in two parts disposed in axial alignment and capableof axial movement towards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaft carrying said roller, and means for drivin said shaft.

8. A machine for corrugating tubular metal bodies comprising a roller adapted to act upon the outside of said body, said roller being formed in two parts capable of axial movement towards and away from each other, a shaft freely supporting said parts, a body disposed between the adjacent ends of said parts, resilient means interposed between the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying said shaft, means for supporting said body, a second body carrying said supporting body, means connecting thesecond body to the first body in a manner such as to permit radial adjustment thereon, a third body, means connecting said third body to said second body, a wedge element interposed between said second and third bodies, means for adjusting said wedge to vary the amount of separationbetween said second and thirdbodies, a roller carried by said third body, a shaft, means driving said shaft, a cam upon said shaft engaging said roller, means operating said shaft, a counterweight acting to hold the parts in a position to cause the roller to contact with said cam, a roller. designed to support and act upon'the inside of the body to be corrugated, said roller being formed in two parts disposed in axial alignment and capable of axial movement towards and away from each other, resilient means opposing the axial moven'ient of the parts in one direction, a shaft carrying said roller, and means for driving said shaft.

. 9. A machine for corrugating tubular metal bodies comprising a roller adapted to act upon the outside of said body said roller being formed in two parts capable of axial movement towards and away from each other, a shaft freely supporting said parts, a body disposed between] the adjacent ends of said parts, resilient means interposed between the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying said shaft, means for supporting said body, a second body carrying said supporting body, means iao connecting the second body to the first body in a manner such as to permit radial adj ustment thereon, a third body, means connecting said third body to said second body, a wedge element interposed between said second and third bodies, means for adjusting said wedge to vary the amount of separation between said second and third bodies, a roller carried by said third body, a shaft, means driving said shaft, a cam upon said shaft engaging said roller, means operating said shaft, a counterweight acting to hold the parts in a position to cause the roller to contact with said cam, a roller designed to support and act uponthe inside of the body to be corrugated, said roller being formed in two parts disposed in axial alignment and capable of axial movement towards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaft carrying-said roller, and means for driving said shaft, comprising a pinion, a driven shaft, apinion freely mounted on said shaft, gearing connecting said pinion with the pinion on the shaft of the roller acting on the inside of the body to be corrugated, means for clutching the pinion to the driven shaft, means for operating said clutch.

10; A machine for corrugating tubular metalbodies comprising a roller adapted to act upon the outside of said body, said roller being formed-in two parts capable of axial movement towardsand away from each other, a shaft freely supportingsaid parts, a body disposed between the adjacent ends of said parts, resilient means interposed be tween the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying said shaft, means for supporting said body, a second body carrying said supporting body means connecting the second body to the first body in a manner such as to permit radial adjustment therein, means for reciprocatingthe second body. to bring the roller into and out of contact with the body to be corrugated, a roller designed to support and act upon the inside of the body, to be corrugated, said roller being formed in two parts disposed in axial alignment and capable of axial movement towards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaftcarrying said roller, means for driving said shaft, and means for lifting the body to facilitate its removal after the corrugation has been effected.

11.'A machine for corrugating tubular metal bodies comprising a roller adapted to act upon the outside of said body, said roller being formed in two parts capable of axial movement towards and away from each-other, a shaft freely supporting said parts, a body disposed between the adjacent ends of said parts, resilient means interposed between the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying said shaft, means for supporting said body, a second body carrying said supporting body means connectin the second body to the first body, means for reciprocating said body comprising a roller thereon, a shaft, a cam upon said shaft engaging said roller, means operating said shaft, a counterweight acting to hold the parts in a position to cause the roller to contact with said cam, a roller designed to supportand act upon the inside of the body to be corrugated, said roller being formed in two parts disposed in axial alignment and capable of axial movement towards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaft carrying said roller, and means for driving said shaft, a body disposed beneath the body being corrugated, a shaft supporting said body, a foot lever attached to said shaft whereby the said body may be caused to engage and lift the corrugated body to facilitate its removal from the machine. 7

12. A machine for corrugating tubular metal bodies comprising a roller adapted to act upon the outside of said body, said roller being formed in two parts capable of axial movement towards and away from each other, a shaft freely supporting said parts, a body disposed between the adjacent ends of said parts, resilient means interposed between the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying V aid shaft, means for supporting said body,

a second body carrying said supporting body, means connecting the second body to the first body, a third body, means connecting said third body to said second body, a wedge ele: ment interposed between said second and third bodies adjustable to vary the degree of separation between said second and third bodies, a roller carried by said third body, a shaft, means driving said shaft, a cam upon said shaft engaging said roller, means op erating said shaft, a counterweight acting tohold the parts in a position to cause the roller to contact with said cam, a roller designed to support and act upon the inside of the body to be corrugated, said roller being formed in two parts disposed in axial alignment and capable of axial movement towards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaft carrying said roller, and means for driving said shaft, a body disposed beneath the body being corrugated, a shaft supporting said body, a foot lever attached to said shaft whereby the said body may be caused to engage and lift the corrugated body to facilitate its removal from the machine.

liZO

13. A machine for corrugating tubular metal bodies comprising a roller adapted to act upon the outside of said body, said roller being formed in two parts capable of axial movement towards and away from each other, a shaft freely supporting said parts, a body disposed between the adjacent ends of said parts, resilient means interposed between the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying said shaft, means for supporting said body, a second body carrying said supporting body, means connecting the second body to the first body in a mannersuch as to permit radial adjustmentthcreon, a third body, means connecting said third body to said second body, a wedge element interposed between said second and third bodies, means for adjusting said wedge to vary the amount of separation between said second and third bodies, a roller carried by said third body, a shaft, means driving said shaft, a cam upon said shaft on gaging said roller, means operating said shaft, a counter-weight acting-to hold the parts in a position to cause the roller to contact with said cam, a roller designed to support and act upon the inside of the body to be corrugated, said roller being formed in two parts disposed in axial alignment and capable of axial movement towards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaft carrying said roller, and means for driving said shaft, comprising a pinion, a driven shaft, a pinion freely mounted on said shaft, gearing connecting said pinion with the pinion on the shaft of the roller acting on the inside of the body to be corrugated, means for clutching the pinion to the driven shaft, means for operating said clutch, a body disposed beneath the body being corrugated, a shaft supporting said body, a foot lever attached to said shaft whereby the said body may be caused to engage and lift the corrugated body to facilitate its removal from the machine.

14:. A machine for corrugating tubular metal bodies comprising a roller adapted to act upon the outside of said body, said roller being formed in two parts capable of axial movement towards and away from each other, a shaft freely supporting said parts, a body disposed between the adjacent ends of said parts, resilient means interposed between the ends of said parts and the sides of said body opposing the movement of the parts towards one another, a body carrying said shaft, means for supporting said body, a second body carrying said supporting body, means connecting the second body to the first body in a manner such as to permit radial adjustment thereon, means for reciprocating the second body to bring the roller into and out of contact with the body to be corrugated, a

roller designed to support and act upon the inside of the body to be corrugated, said roller being formed in two parts disposed in axial alignment and capable of axial movement to wards and away from each other, resilient means opposing the axial movement of the parts in one direction, a shaft carrying said roller, means for driving said shaft, and means for lifting the body to facilitate its removal after the corrugation has been effected, comprising a body disposed beneath the body being corrugated, a shaft supporting said body, a foot lever attached to said shaft whereby the said body may be caused to engage and lift the corrugated body to facilitate its removal from the machine.

15. A machine of the character described comprising in combination, eorrugating rollers for tubular metal bodies, resilient means associated with each of said rollers to compensate for decrease in length of said body during operation of said rollers, and means associated with one of said rollers to automatically reciprocate it periodically.

In testimony whereof I have hereunto set my hand.

orninnns JOSEPH nnonns. 

